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Proceedings Paper

Photon noise limits to the detection of closure phase for interferometric measurements of earth-orbiting satellites
Author(s): Michael C. Roggemann; Matthew R. Whiteley
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Paper Abstract

Michelson stellar interferometers with long baselines have been proposed as a means for obtaining high resolution images of space objects. The fringes measured in such interferometers move randomly due to atmospheric turbulence effects. To overcome turbulence effects the fringe phase at any instant is summed around groups of three or more aperture pairs to create the so-called closure phase. For small apertures, the closure phase is insensitive to atmospheric turbulence effects. However, the closure phase is corrupted by photon noise effects. In a recent paper the probability density function of the error in the closure phase estimate due to photon noise was derived as a function of the fringe visibility and light level, and evaluated. In this paper we apply this theoretical result to the practical problem of measuring the closure phases associated with an Earth orbiting satellite.

Paper Details

Date Published: 25 October 1996
PDF: 11 pages
Proc. SPIE 2827, Digital Image Recovery and Synthesis III, (25 October 1996); doi: 10.1117/12.255088
Show Author Affiliations
Michael C. Roggemann, Air Force Institute of Technology (United States)
Matthew R. Whiteley, Air Force Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2827:
Digital Image Recovery and Synthesis III
Paul S. Idell; Timothy J. Schulz, Editor(s)

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